台湾海峡软水母亚纲二新种  

Two new species of Leptomedusae from the Taiwan Strait,China

作　　者：林茂[1] 许振祖[2] 黄加祺[2] 王春光[1] 

机构地区：[1]国家海洋局第三海洋研究所,福建厦门361005 [2]厦门大学海洋学系,福建厦门361005

出　　处：《水产学报》2009年第3期452-455,共4页Journal of Fisheries of China

基　　金：国家海洋局908专项(908-ZC-II-02;908-01-ST06Ⅱ;908-02-01-02)

摘　　要：根据2007年1月和4月在台湾海峡20．849°～27．056°N，114．920°～121．241°E水域采集的标本分析的结果，描述了软水母亚纲二新种：黑背多管水母，新种Aequorea atrikeeli sp．nov．和波状触丝水母，新种Lovenella sinuosasp．nov．。黑背多管水母，新种：伞扁平，略呈凸透镜形；胃宽约为伞径1／2；口唇23个，简单，片状，口唇数比辐管数少二倍；辐管47条；生殖腺线状，几乎延伸整条辐管；缘触手14条，触手基球宽锥状，有1个背龙骨突，覆盖着黑色素斑块；每二条触手间有3个（2～4）退化缘疣；所有触手基球和缘疣均有向轴排泄乳突；每二条辐管间有1个平衡囊。波状触丝水母，新种：4个生殖腺线状，生殖腺中线纵向分开两侧，每侧有不规则波状皱褶，生殖腺从垂管近基部沿着辐管到接近环管；4条主辐位缘触手，基球很大，在背轴隆起突出，具黑色素斑块，每个触手基球两侧具有8～10对侧丝；每二条触手间有6—7个退化缘疣和7～8个平衡囊；缘疣无侧丝，疣顶端具黑色斑点。Samples of Leptomedusae were collected from the Taiwan Strait at 20.849°-27.056°N,114.920°-121.241°E, during January and April, 2007. Two new species of Leptomedusae, Aequorea atrikeelis sp. nov. and Lovenella sinousa sp. nov. are described in the present paper based on the type specimens from the Taiwan Strait. The specific diagnosis of the two new species are as follows：Aequorea atrikeelis sp. nov. （Fig.1） , Umbrella flat, slightly convex; stomach usually half as wide as umbrella; mouth with 23 lips, simple, lamellar, about less 2 times than radial canals; with 47 radial canals; gonads linear along whole length of radial canals; with 14 marginal tentacles, base bulbs broad and conical, with an abaxial keel, its abaxial swelling covering black pigmented patch; usually with 3 （2-4） rudimentary marginal warts between successive tentacles; all base bulbs and marginal warts with an excretory papillae on the abaxial bulbs; with 1 statocyst between successive radial canals. Lovenella sinousa sp. nov. （Fig.2）, Umbrella flatter than hemispherical; with 4 gonads linear, longitudinally divided, with irregular sinuate folds on either side of each gonad, running from the nearly base manubrium to the vicinity of the ring canal; 4 perradial marginal tentacles with a large basal bulbs, bulge and prominence in abaxial part, with black pigmented patch along abaxial bulbs, each flanked by 8-10 pairs of lateral cirri; usually with 6-7 rudimentary marginal warts and 7-8 statocysts between successive tentacles; all marginal warts without lateral cirri, but with a distinct black pigmented spot on the extreme tip; each statocyst with 2-3 concretions.

关 键 词：软水母亚纲 分类 新种 台湾海峡 

分 类 号：Q958.8[生物学—动物学] S932.8[农业科学—渔业资源]